A contractor undertook to finish a job in 150 days and employed 200 men. After 50 days he found that only 1/4 of work was finished. How many extra days are needed if he employs 50 more men?
a) 20
b) 25
c) 30
d) 35
e) 45

• work part A=25% and work part B= 75%
  25% work done by 200 people in 50 days
  if only one employee works then he takes 200*50=10000 days
  and if work(B) is triple more ten he will take =10000*3 =30000 days
  if employees are 250 then days = 30000/250=120days
  then total days = 50+120 = 170 days
  how many extra days taken = 170-150 = 20 days answer
  
• 12 years agoHelpfull: Yes(3) No(2)